代码
Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->// 类似 XPATH 的数组选择器
function xml_array_select( $arr, $arrpath )
{
$arrpath = trim( $arrpath, '/' );
if(!$arrpath) return $arr;
$self = 'xml_array_select';
$pos = strpos( $arrpath, '/' );
$pos = $pos ? $pos : strlen($arrpath);
$curpath = substr($arrpath, 0, $pos);
$next = substr($arrpath, $pos);
if(preg_match("/\\[(\\d+)\\]$/",$curpath,$predicate))
{
$curpath = substr($curpath, 0, strpos($curpath,"[{$predicate[1]}]"));
$result = $arr[$curpath][$predicate[1]];
}else $result = $arr[$curpath];
if( is_array($arr) && !array_key_exists($curpath, $arr) )
{
die( 'key is not exists:' . $curpath );
}
return $self($result, $next);
}
// 如果输入的数组是全数字键,则将元素值依次传输到 $callback, 否则将自身传输给$callback
function xml_array_each( $arr, $callback )
{
if(func_num_args()<2) die('parameters error');
if(!is_array($arr)) die('parameter 1 shuld be an array!');
if(!is_callable($callback)) die('parameter 2 shuld be an function!');
$keys = array_keys($arr);
$isok = true;
foreach( $keys as $key ) {if(!is_int($key)) {$isok = false; break;}}
if($isok)
foreach( $arr as $val ) $result[] = $callback($val);
else
$result[] = $callback( $arr );
return $result;
}
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